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A193806 Numbers k such that Fibonacci(k) in base 3 ends with k in base 3. 1
1, 5, 350, 157814, 2992166, 68999566966858 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

No more terms < 9*10^18. - Lars Blomberg, Jan 04 2019

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

350 = (1,1,0,2,2,2) in base 3;

F(350) = (1,2,1,2,2,0,...1,1,0,2,2,2) in base 3.

MATHEMATICA

fibo[n_, b_]:={au=Fibonacci[n], ab=Floor[Log[b, n]]+1, Mod[au, b^ab]==n}//Last; Select[Range[500000], fibo[#, 3]&]

CROSSREFS

Cf. A000045 (Fibonacci), A007089 (numbers in base 3).

Sequence in context: A269556 A227448 A210820 * A158105 A203527 A235725

Adjacent sequences:  A193803 A193804 A193805 * A193807 A193808 A193809

KEYWORD

nonn,more

AUTHOR

José María Grau Ribas, Aug 05 2011

EXTENSIONS

a(5) from Alois P. Heinz, Aug 05 2011

a(6) from Lars Blomberg, Jan 04 2019

STATUS

approved

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Last modified May 28 17:37 EDT 2020. Contains 334684 sequences. (Running on oeis4.)